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Old 19th October 2019
  #1
Gear Head
 

40 kg/m^3 rockwool vs 70

Hello,
I would like to acoustically insulate a wall with plasterboard and rock wool.
I will leave 6 cm of air space then 5 cm of rock wool and then plasterboard.
I am wondering if 40 kg/m^3 rockwool is enough or not, The noise I hear from the neighbor are very far speaking and a noticeable but not too strong noise from the music they listen to when it is very high (mainly bass frequencies).

thanks!